你曾听说过机油盖或泄油螺丝没栓紧的事吗？

Have you heard of oil cap or drain plug not tightened?

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这种锁舌用螺丝装在锁支架上，而锁支架用螺丝固定或焊接在门上，无锁芯的装配时，可用锥形四方匙开启锁栓为自由行程。

Slam latch is screwed onto latch support which is either screwed or welded to the door. Assembled without insert it can be opened with a tapered square key. Bolt has free stroke.

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化学锚栓，地脚螺栓，丝杆，膨胀螺丝。各类垫片以及冲压件，轴承，车加工件，液压总成，连接件。

Various kinds of washers, stamping parts, bearings, machine processing parts, hydraulic pressure assemblies and connecting fittings.

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化学锚栓，地脚螺栓，丝杆，膨胀螺丝。各类垫片以及冲压件，轴承，车加工件，液压总成，连接件。

Various kinds of washers, stamping parts, bearings, machine processing parts, hydraulic pressure assemblies and connecting fittings.

youdao